- Collector
- John Hummer (preserved the original Gulf Co clone before site destruction)
- First described
- 2013
- Type
- type specimen extinct wild site cultivation only
Type specimen. All cultivation luteoviridis Gulf Co plants trace to a single John Hummer-preserved division. Wild site destroyed.
Standout traits
- Anthocyanin-free yellow-green expression — light green/yellow coloration
- Genetically giant form (var. okefenokeensis) — needs exceptional care to size up
- Vigorous + not super rot-prone (Mike, post #13, 2026): 'overall a good looking plant'
- Vigorous compared to typical AF psittacina var. psittacina f. viridescens — Mike's regular AF psittacina is 'painfully slow to grow'
- EXTREMELY rare — Mike (post #1): 'finding an AF psittacina is pretty hard, but finding the giant, antho-free plant is beyond impossible, until now'
- mirabilis (post #4, 2017) achieved enormous size with Osmocote feeding (5-10 pellets in medium pot) — 'biggest heads I have ever seen on any psittacina, they just look like balls'
Cultivation
Outdoor Northern California (Mike). Standing-water tolerant during active season, reduced water during dormancy. Heavy feeding (Osmocote pellets in pot) drives massive size in mirabilis's grow.
Mike's distribution timeline: divisions finally available as of Jan 2026 — small but available.
Photos (13)
Naming
"f. luteoviridis" — yellow-green AF form. Variety description used the John Hummer Gulf Co clone as the type specimen.